Bob's Master Safe and Lock Service can provide Interchangeable Cores for almost any application. We service Best, Falcon, Keymark, MedecoX4, Oak, Arrow, Sargent and Schlage interchangable cores. In most cases, we can expand your existing system. If key control is an issue, our Medeco X4 interchangeable core will retrofit Best interchangable core locks while giving you complete control over key duplication - saving you money in lock rekeying charges in the process.

We can supply you with extra cores to allow you to maintain your system, or we can handle it for you. We stock several manufacturers with varying degrees of key control.